* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Open Sans', sans-serif;
            background-color: #ffffff;
            color: #333333;
            line-height: 1.5;
        }
        .faq-page-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 40px 20px;
        }
        .faq-page-title {
            font-size: 36px;
            font-weight: 700;
            color: #333;
            text-align: center;
            margin-bottom: 16px;
        }
        /* 副标题强制居中 */
        .faq-page-sub {
            display: block;
            width: 100%;
            max-width: 800px;
            margin: 0 auto 40px auto !important;
            text-align: center !important;
            font-size: 18px;
            color: #555;
            line-height: 1.5;
            clear: both;
        }
        .faq-category {
            margin-bottom: 48px;
        }
        .category-title {
            font-size: 28px;
            font-weight: 700;
            color: #0047AB;
            border-left: 4px solid #0047AB;
            padding-left: 16px;
            margin-bottom: 24px;
        }
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .faq-item {
            background: transparent;
            border: none;
        }
        .faq-question {
            background: #f8fafc;
            border-radius: 16px;
            padding: 16px 24px;
            font-weight: 600;
            font-size: 18px;
            color: #333;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: background 0.2s;
            width: 100%;
            box-sizing: border-box;
        }
        .faq-question:hover {
            background: #eef2ff;
        }
        .faq-icon {
            font-size: 24px;
            font-weight: 400;
            color: #0047AB;
            transition: transform 0.2s;
            flex-shrink: 0;
            margin-left: 16px;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
            background: transparent;
            padding: 0 24px;
        }
        .faq-answer p,
        .faq-answer ul,
        .faq-answer table {
            font-size: 15px;
            line-height: 1.6;
            color: #555;
            margin: 12px 0;
        }
        .faq-answer ul {
            padding-left: 20px;
        }
        .faq-answer li {
            margin-bottom: 6px;
        }
        .faq-answer strong {
            color: #0047AB;
            font-weight: 600;
        }
        .faq-answer a {
            color: #0047AB;
            text-decoration: none;
        }
        .faq-answer a:hover {
            text-decoration: underline;
        }
        .impa-table {
            width: 100%;
            border-collapse: collapse;
            background: #fff;
            border-radius: 12px;
            overflow: hidden;
            margin: 12px 0;
            font-size: 14px;
        }
        .impa-table th,
        .impa-table td {
            border: 1px solid #e2e8f0;
            padding: 8px 12px;
            text-align: left;
            vertical-align: top;
        }
        .impa-table th {
            background: #f1f5f9;
            font-weight: 600;
            color: #0047AB;
        }
        .faq-item.active .faq-icon {
            transform: rotate(45deg);
        }
        .faq-item.active .faq-answer {
            max-height: 800px;
            padding-bottom: 16px;
        }
        @media (max-width: 768px) {
            .faq-page-title { font-size: 28px; }
            .category-title { font-size: 24px; }
            .faq-question {
                font-size: 16px;
                padding: 14px 20px;
            }
            .faq-answer p,
            .faq-answer li { font-size: 14px; }
            .impa-table th, .impa-table td { font-size: 12px; padding: 6px 8px; }
            .faq-page-sub {
                font-size: 16px;
                margin-bottom: 30px !important;
            }
        }